Waterproof sealing structure of projection lamp

The utility model relates to the technical field of projection lamps, in particular to a waterproof sealing structure of a projection lamp, which comprises a lamp body formed by connecting a face frame, a middle frame and a back plate, a glass plate is embedded in the face frame, a sealing cavity is formed among the face frame, the middle frame and the back plate, and a lamp component is arranged in the sealing cavity. According to the utility model, the designed sealing part is used for sealing the incoming line, the sealing performance of the whole sealing cavity is ensured under the condition of ensuring convenient wiring of the embedded body, in addition, the breathing part is also designed at the detection hole, and after the sealing performance of the lamp body is detected through the detection hole, the sealing performance of the whole sealing cavity is ensured. According to the lamp assembly, the detection hole can be sealed through the breathing component, the breathing component can balance the pres